An emergency vehicle drives through a roadblock leading to the community of Rancho Tehama. (Photo by Bill Husa, Enterprise-Record)

This is one of seven crime scenes in the mass shooting in Rancho Tehama near Red Bluff on Tuesday, Nov. 14, 2017. Tehama County Assistant Sheriff Phil Johnston says investigators are trying to determine a motive in the shootings, which left four dead. (Jim Schultz/The Record Searchlight via AP)

Residents and emergency personnel work at one of the scenes of Tuesday, Nov. 14’s mass shooting at Rancho Tehama (Jim Schultz/The Record Searchlight via AP)

Bullet holes are seen in a pickup that was shot at Tuesday morning in Rancho Tehama. (Photo by Bill Husa, Enterprise-Record)

Rancho Tehama Road is closed to traffic at Paskenta Road, where worried residents and reporters lined the road. (Photo by Bill Husa, Enterprise-Record)